Potent and selective v-Abl tyrosine kinase inhibitor (IC50 = 38 nM). Also inhibits PDGFR and c-kit. Exhibits selectivity for v-Abl over a panel of other tyrosine and serine/threonine protein kinases. Selectively inhibits PDGF-stimulated growth of v-abl-transformed PB-3 cells and v-sis-transformed BALB/c 3T3 cells in vitro. Exhibits antitumor effects in mice bearing AMuLV or BABL/c 3T3 v-sis cells. Purity 98%. MW (observed): 589.71